It is not a Model 12A,B,or C. All of these Model 1909 and (later renamed)model 12s had an internal hammer and bolt with side eject. Notice the lack of hammer on this Remington Model 12C receiver:
Yours looks like a Winchester 1890 or 1906 to me:
I cannot find a picture of a similar REMINGTON bolt action rifle... if yours does say Remington on the Barrel, it may have been rebarreled (Doubtful) or it may be really rare (even more doubtful). Check this picture of an early Winchester 1906 .22 Pump:
It definitely says Remington on the barrel. I will have to really study it tomorrow and take some close up shots of the barrel and action. I will try to get a good picture of the scribing on the barrel. Thanks for your inputs on this, despite 22 years active duty, I never really learned about more than the M16 I shot (Qual Marksman - Yay Me 39/40 on target)
Ok, now I am even more confused!
On the barrel:
Remington Arms Company Ilion NY USA
Pedersons Patents Jan'y 5 1909 Other Patents Pending
By rear site
.22 Long Rifle
Behind the trigger guard is a serial number 96898
Behind the hammer in top near the stock in big letters it says
Winchester
Trademark